That seems insane. How is "properly inflated" defined? Per the door sticker?
Another quick question - these cars check the tyre pressure through ABS (?), which means we have to tell them when the tyres are correctly inflated. What happens if we were to set it super low, and then say they are set correctly? Would the alert go off straight away? Or is it checking for a difference in behaviour from the set pressure?
That's a few questions, sorry